{ config, lib, ... }:
let
  inherit (config.grimmShared) enable locale;
in
{
  config = lib.mkIf (enable && locale) {
    time.timeZone = "Europe/Berlin";

    # Select internationalisation properties.
    i18n.defaultLocale = "en_US.UTF-8";

    i18n.extraLocaleSettings = {
      LC_ADDRESS = "de_DE.UTF-8";
      LC_IDENTIFICATION = "de_DE.UTF-8";
      LC_MEASUREMENT = "de_DE.UTF-8";
      LC_MONETARY = "de_DE.UTF-8";
      LC_NAME = "de_DE.UTF-8";
      LC_NUMERIC = "de_DE.UTF-8";
      LC_PAPER = "de_DE.UTF-8";
      LC_TELEPHONE = "de_DE.UTF-8";
      LC_TIME = "de_DE.UTF-8";
    };

    console.keyMap = "de";

    services.xserver.xkb = {
      layout = "de";
      variant = "";
    };
  };

  options.grimmShared.locale = lib.mkEnableOption "Sets german units but english language";
}